Creating a table with dynamic dates and one variable per date

Hello, everyone. I need your kind help to create a crazy table in PowerQuery M. What I need to do is create a table with dynamic dates range and replicate these dates for each windturbine tag. ...

Need Help

v-xiaotang

5 years ago

Hi nlgenin

do you mean you want to create the table like bellow with M code？

Name	Date
A1	2021/1/1
A1	2021/1/2
A1	2021/1/3
A1	2021/1/4
A1	2021/1/5
A1	.
A1	.
A1	.
A1	.
A1	2021/6/23
A2	2021/1/1
A2	2021/1/2
A2	2021/1/3
A2	2021/1/4
A2	2021/1/5
A2	.
A2	.
A2	.
A2	.
A2	2021/6/23

here are my operations,

Then open the Advanced Editor, and paste the M code bellow into it

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WcjRUitWhnDKimIoFAA==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Name = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Name", type text}}),
    #"Removed Duplicates" = Table.Distinct(#"Changed Type"),
    diffday=Int16.From( Date.From(DateTime.LocalNow()) - Date.From(#date(2021,1,1)))+1,
    #"Added Custom" = Table.AddColumn(#"Removed Duplicates", "Custom", each List.Dates(#date(2021, 1, 1), diffday, #duration(1, 0, 0, 0))),
#"Expanded Custom" = Table.ExpandListColumn(#"Added Custom", "Custom")
in
    #"Expanded Custom"